Description

Denial of service (DoS) attacks have become a major threat to current computer networks. Denial of Service (DoS) attacks on the Internet aim to prevent legitimate clients from accessing a service and are considered a serious threat to the availability and reliability of the Internet services. Such an attack is feasible because the attacker often pays very little for requesting a service, most of the time only the cost of sending a network packet. In practice the most part of connections of subjects of a wide area network uses the virtual connections as this method is the dynamic protection of network connection and won’t use static key information. Therefore, the interaction without establishing a virtual channel is one of the possible reasons for the success of remote attacks such as DoS / DDoS. An abstract considers the mathematical model of system of protection of computer networks against attacks such as DoS/DDoS, allowing in practice to detect attacks such as DoS / DDoS. Grounded way to prevent attacks through the use of network reconfiguration procedures, it is difficult for practical implementation attacks such as DoS / DDoS. The algorithm to create new virtual data channels to ensure a minimum amount of traffic regardless of reconfiguring computer network. In this project, the system presents software puzzle scheme for defeating gpu-inflated dos attack.